Subequently, the Coxes requested a CDP hearing with respect to the taxes they owed for 2001 and 2002. When the same Appeals Officer was assigned the CDP hearing the Coxes asked the case to be reassigned to a new Appeals Officer since, they argued, the Appeals Officer was not impartial because of his prior involvment. The IRS refused, and ultimately the Coxes appealed to the United States Tax Court. The Tax Court reviewed IRS Treas. Reg. § 301.6330-1(d)(2) which provides that even though an Appeals Officer has had prior involvement with the same taxpayers for a different tax year the Appeals Officer may still conduct the subsequent CDP hearing. The Tax Court upheld the IRS Regulation. On appeal, however, the 10th Circuit reversed. Arguably the 10th Circuit’s decision may be limited to the facts since in Cox the Appeals Officer had reviewed the 2001 and 2002 as part of his decision in the 2000 CDP hearing. In any event the Tax Court is not bound to follow the 10th Circuit’s ruling in cases that are not appealable to the 10th Circuit. Golsen v. Commissioner,54 T.C 742 (1970). It is not, however, unusual for the Tax Court to re-examine its decision where it has been reversed by a Circuit Court of Appeal even though it is not required to do so.